Airworthiness Directive · Amendment 39-21567 · Main rotor drive system wiring
Airbus Helicopters
This AD applies to all Airbus Helicopters Model EC225LP helicopters, certificated in any category.
The FAA is adopting a new airworthiness directive (AD) for all Airbus Helicopters Model EC225LP helicopters. This AD was prompted by reports of an oil leak from the main gearbox (MGB) during engine start up. This AD requires modifying and performing subsequent repetitive function testing of the MGB emergency lubrication (EMLUB) system as specified in a European Union Aviation Safety Agency (EASA) AD, which is incorporated by reference (IBR). The FAA is issuing this AD to address the unsafe condition on these products.
Except as specified in paragraph (h) of this AD: Comply with all required actions and compliance times specified in, and in accordance with European Union Aviation Safety Agency AD 2016-0232R1, dated December 12, 2019 (EASA AD 2016-0232R1).
(1) Where EASA AD 2016-0232R1 refers to December 6, 2016 (the effective date of European Aviation Safety Agency AD 2016-0232, dated November 22, 2016), this AD requires using the effective date of this AD.
(2) Where EASA AD 2016-0232R1 refers to flight hours (FH), this AD requires using hours time-in-service (TIS).
(3) Where paragraph (2) of EASA AD 2016-0232R1 allows an additional interval margin of 225 FH, this AD does not. This AD requires accomplishing the functional tests within 600 hours TIS, and thereafter at intervals not to exceed 600 hours TIS.
(4) Where the service information referenced in EASA AD 2016-0232R1 requires contacting Airbus Helicopters technical support, this AD requires that the corrective action be accomplished using a method approved by the Manager, Strategic Policy Rotorcraft Section, FAA. The Manager's approval letter must specifically refer to this AD.
(5) The “Remarks” section of EASA AD 2016-0232R1 does not apply to this AD.
